> Hi all Sorry for the off topic post, but I'm looking for a CCTV > camera. Who's a decent wholesaler that sells them? > > CDL have about 2 total, and none of the other usual IT sellers have > anything. > > > Relevance to mythtv? None. Any suggestions appreciated.

On 01/07/10 00:18, Tortise wrote: > From:<criggie [at] criggie> >> Hi all Sorry for the off topic post, but I'm looking for a CCTV >> camera. Who's a decent wholesaler that sells them? > I think it is of relevance to me anyway, so I welcome any resulting discussion. Have you seen > http://en.wikipedia.org/wiki/Closed-circuit_television_camera ?

> On 04/07/10 20:48, criggie [at] criggie wrote: > > I got one of these on order > > http://www.dealextreme.com/details.dx/sku.26223 will report on > > function later. > > Sodding brilliant card. Works with the saa7134 kernel module, just needs > saa7134 card=33,33,33,33 > /etc/modprobe.d/saa7134.conf > > Provides /dev/video0-3 and each one just works. > > Anyway - this is unrelated to myth so any questions ask off-list. >

How is discussion of a video capture card unrelated to myth? This would (I assume) work very well for recording from a Sky box. I'm temped to get one myself as my PVR-150 is nearing the end of it's life I suspect.

> How is discussion of a video capture card unrelated to myth? This would > (I assume) work very well for recording from a Sky box. I'm temped to > get one myself as my PVR-150 is nearing the end of it's life I suspect.

I'm using this one for CCTV and cameras, rather than broadcast. Also I'm using motion not myth for the software side.

It does have mono audio in, but none of my cameras have microphones so its really irrelevant to me. motion doesn't record audio anyway. You could record from four sky boxes with this, but it wouldn't be ideal.

On Thu, Jul 8, 2010 at 2:53 PM, Steve Hodge <stevehodge [at] gmail> wrote: > On Thu, Jul 8, 2010 at 2:40 PM, <criggie [at] criggie> wrote: >> >> On 04/07/10 20:48, criggie [at] criggie wrote: >> > I got one of these on order >> > http://www.dealextreme.com/details.dx/sku.26223 will report on >> > function later. >> >> Sodding brilliant card. Works with the saa7134 kernel module, just needs >> saa7134 card=33,33,33,33 >> /etc/modprobe.d/saa7134.conf >> >> Provides /dev/video0-3 and each one just works. >> >> Anyway - this is unrelated to myth so any questions ask off-list. > > How is discussion of a video capture card unrelated to myth? This would (I > assume) work very well for recording from a Sky box. I'm temped to get one > myself as my PVR-150 is nearing the end of it's life I suspect.

> It does have mono audio in, but none of my cameras have microphones so > its really irrelevant to me. >

Ah, that's a problem. I don't think I'd be willing to live with mono. I guess it would be possible to record the audio separately and then remux it into the h.264 stream but it'd be hard to get the sync right.

The PVR150 is a nice card - what's wrong with yours ? >

The audio gets very distorted and full of static when starting a recording. It's apparently not that unusual as I easily found a work-around on the net: resetting the audio with v4l2-ctl --set-audio-input 1 -d /dev/video0 fixes the problem. But it didn't used to exhibit the issue at all and then for a while it was intermittent. So I suspect the hardware. And there has been one case where resetting the audio didn't work and I had to reboot to fix it.

On Thu, 2010-07-08 at 15:40 +1200, Steve Hodge wrote: > The audio gets very distorted and full of static when starting a > recording. It's apparently not that unusual as I easily found a > work-around on the net: resetting the audio with > v4l2-ctl --set-audio-input 1 -d /dev/video0 > fixes the problem. But it didn't used to exhibit the issue at all and > then for a while it was intermittent. So I suspect the hardware. And > there has been one case where resetting the audio didn't work and I > had to reboot to fix it.

Tinny audio is an annoying IVTV driver bug that's been around and back again for ages. I've seen it on three out of four systems myself at varying rates of intermittent-ness and frequency which also changes with kernel versions. I wouldn't be at all surprised if it was this.

> On Thu, 2010-07-08 at 15:40 +1200, Steve Hodge wrote: > > The audio gets very distorted and full of static when starting a > > recording. It's apparently not that unusual as I easily found a > > work-around on the net: resetting the audio with > > v4l2-ctl --set-audio-input 1 -d /dev/video0 > > fixes the problem. But it didn't used to exhibit the issue at all and > > then for a while it was intermittent. So I suspect the hardware. And > > there has been one case where resetting the audio didn't work and I > > had to reboot to fix it. > > Tinny audio is an annoying IVTV driver bug that's been around and back > again for ages. I've seen it on three out of four systems myself at > varying rates of intermittent-ness and frequency which also changes with > kernel versions. I wouldn't be at all surprised if it was this. >

It's possible though it's a lot worse than just "tinny". I don't upgrade my kernel very often and I'm pretty sure it's gotten worse between upgrades.

The card is at least 5 years old and IIRC I might have picked it up second hand even then. The system had heat issues for a while too.

On Thu, Jul 8, 2010 at 3:40 PM, Steve Hodge <stevehodge [at] gmail> wrote: > On Thu, Jul 8, 2010 at 3:26 PM, <criggie [at] criggie> wrote: >> >> It does have mono audio in, but none of my cameras have microphones so >> its really irrelevant to me. > > Ah, that's a problem. I don't think I'd be willing to live with mono. I > guess it would be possible to record the audio separately and then remux it > into the h.264 stream but it'd be hard to get the sync right. > >> The PVR150 is a nice card - what's wrong with yours ? > > The audio gets very distorted and full of static when starting a recording. > It's apparently not that unusual as I easily found a work-around on the net: > resetting the audio with > v4l2-ctl --set-audio-input 1 -d /dev/video0 > fixes the problem. But it didn't used to exhibit the issue at all and then > for a while it was intermittent. So I suspect the hardware. And there has > been one case where resetting the audio didn't work and I had to reboot to > fix it.

I had the tinny audio problem, but no longer use the card. Your fix (cronned to happen every 10 seconds) 'fixed' it.

> On Thu, Jul 8, 2010 at 3:40 PM, Steve Hodge <stevehodge [at] gmail> wrote: > > On Thu, Jul 8, 2010 at 3:26 PM, <criggie [at] criggie> wrote: > >> > >> It does have mono audio in, but none of my cameras have microphones so > >> its really irrelevant to me. > > > > Ah, that's a problem. I don't think I'd be willing to live with mono. I > > guess it would be possible to record the audio separately and then remux > it > > into the h.264 stream but it'd be hard to get the sync right. > > > >> The PVR150 is a nice card - what's wrong with yours ? > > > > The audio gets very distorted and full of static when starting a > recording. > > It's apparently not that unusual as I easily found a work-around on the > net: > > resetting the audio with > > v4l2-ctl --set-audio-input 1 -d /dev/video0 > > fixes the problem. But it didn't used to exhibit the issue at all and > then > > for a while it was intermittent. So I suspect the hardware. And there has > > been one case where resetting the audio didn't work and I had to reboot > to > > fix it. > > I had the tinny audio problem, but no longer use the card. Your fix > (cronned to happen every 10 seconds) 'fixed' it. >

I'm running it in the channel change script - once it's fixed it seems to stay fixed for the duration of a recording.

On 8/07/2010 4:26 p.m., Nick Rout wrote: > On Thu, Jul 8, 2010 at 3:40 PM, Steve Hodge<stevehodge [at] gmail> wrote: > >> On Thu, Jul 8, 2010 at 3:26 PM,<criggie [at] criggie> wrote: >> >>> It does have mono audio in, but none of my cameras have microphones so >>> its really irrelevant to me. >>> >> Ah, that's a problem. I don't think I'd be willing to live with mono. I >> guess it would be possible to record the audio separately and then remux it >> into the h.264 stream but it'd be hard to get the sync right. >> >> >>> The PVR150 is a nice card - what's wrong with yours ? >>> >> The audio gets very distorted and full of static when starting a recording. >> It's apparently not that unusual as I easily found a work-around on the net: >> resetting the audio with >> v4l2-ctl --set-audio-input 1 -d /dev/video0 >> fixes the problem. But it didn't used to exhibit the issue at all and then >> for a while it was intermittent. So I suspect the hardware. And there has >> been one case where resetting the audio didn't work and I had to reboot to >> fix it. >> > I had the tinny audio problem, but no longer use the card. Your fix > (cronned to happen every 10 seconds) 'fixed' it. > >

I see this audio problem occasionally as well - definitely think it is a driver issue rather than a hardware problem, as (for me) it appeared immediately after upgrading to 0.21. No obvious pattern to it, but changing channels several times in LiveTV will trigger it almost every time.